JPS5837254Y2 - tire bobbin - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a bobbin that can be effectively used in bottom trawl fishing by trawlers and the like.

Generally, bobbins with large diameter rubber balls or copper balls have been used in rocky reef areas with rough bottom sediment, but these bobbins are expensive, so rubber bobbins made from old tires are used. .

Then, three to four holes are made in each side of the plurality of old hollow tires, and a wire rope or a small diameter chain is stretched to the required length through the holes to bind the plurality of hollow tires into one. There is something tied to it.

However, in this type of tire bobbin, the tires are simply connected by wires, etc., so when the tied wires get caught on a protrusion on the seabed during use, they can easily shift, causing the tires to tilt together. The shape has changed greatly from when it was made, such as becoming zigzag, and the shape no longer serves the purpose of cutting.

In order to solve this problem, attempts have been made in the past to maintain the spacing by stacking multiple washers made by punching out circular shapes from the sides of old tires inside each tire and threading them through a wire rope. became flat with use, and ultimately did not improve the situation in any way.

The product was devised in consideration of the current situation, and its purpose is to be able to produce it at a low cost, and to maintain the bobbin shape for use in bottom trawling fisheries, etc., regardless of the bottom type or topography. This invention relates to a bobbin structure that can be effectively used.

In the present invention, a plurality of hollow tires 1 are arranged in close contact with each other, through-holes 2 are provided at predetermined intervals on both sides of each tire, and a number of wire ropes or chains corresponding to the through-holes 2 are formed. A tire bobbin is characterized in that the plurality of tires 1 are integrally secured by inserting the tire bobbin 3 through the tire bobbin, and a spacing member 4 having an elastic restoring force is interposed inside each hollow tire 1. It is.

In the figure, 5 is a ground rope, 6 and 7 are iron plates,
3 is a sunken shackle and 9 is a simple one.

In the above configuration, the tire 1 constituting the tire bobbin is preferably an old tire (waste tire), and its diameter is preferably for light vehicles and passenger cars, that is, from 480φ to 520φ.

However, it can also be constructed using new tires.

Although the through holes 2 are provided at four locations on the side surfaces in this actual case, they can be increased or decreased as appropriate depending on the diameter of the hollow tire 1 or the number of holes arranged in parallel.

The material of the spacing member 4, which is the gist of the present invention, is made of commercially available rubber (such as carbon black rubber), which has been frequently used as a material for ground rope bobbins in recent years, and has the required elastic stability, abrasion resistance, and expansion strength. Preferably something rich in

The spacing member 4 preferably has a hollow cylindrical shape, and in particular, from the viewpoint of demolding, it is preferably a spiral cylindrical body having spirals on the inner and outer peripheral surfaces as shown in FIGS. 3 and 4 (with a spiral surface on the outer surface). (The core can be easily removed by rotating after molding), and this is also a form that has sufficient elastic restoring force like a bellows.

Furthermore, the attachment of the tire bobbin to the spacing member 4 is not limited to the form shown in FIGS. 1 and 2;
It can also be easily attached to the type shown in FIG.

In the figure, 10 is a hollow shaft body on which the hollow tire 1 is integrally mounted, 11 is a flange for preventing and tightening the tire from falling off, and 12 is a connecting bolt.

The tire bobbin structure of the present invention compresses the entire tire structure, including each spacing member 4, in the longitudinal direction by sufficiently tightening the wire rope or chain 3 during assembly, so it is constantly subjected to outward force during use. The spacing member 4 is exerted, and this outward force allows the tire bobbin to maintain sufficient rigidity and shape.

As described above, the tire bobbin according to the present invention can reliably maintain its shape by a simple and inexpensive means such as attaching a spacing member having sufficient elastic restoring force and tensile strength inside the bobbin.

[Brief explanation of drawings]

FIG. 1 is a partially sectional front view of a tire bobbin according to the present invention;
2 is a sectional view taken along the line I-I in FIG. 1, FIG. 3 is a partially sectional front view of the spacing member, FIG. 4 is a side view of the same, and FIG. 5 is another tire bobbin according to the present invention. Partial cross section of example 1″E
It is a front view. 1...Hollow tire, 2...Through hole, 3.
...Wire rope or chain, 4...
- Spacing material.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. A plurality of hollow tires are arranged side by side in close contact, mutually aligned through holes are provided on both sides of each tire at a predetermined interval, and a number of wires corresponding to the aligned through holes are provided. A tire bobbin characterized in that the plurality of tires are fixed together by inserting a rope or chain therethrough, and a spacing member having an elastic restoring force is interposed inside each hollow tire. 2. The tire bobbin according to claim 1, wherein the spacing member is a helical cylinder made of rubber made by a merchant or an outsider.